Staple-driving tool



(No Model.)

A. MATTSON.

S'TAPLB DRIVING TOOL.

No. 367,537. Patented Aug. 2, 1887.

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Inl/anion UNITED STATES PATENT OFFICE.'

ANDREV MATTSON, OF MINNEAPOLIS, MINNESOTA.

STAPLE-DRIVING TOOL.

SPECIFICATION forming part of Letters Patent No. 367,537, dated August2, 1887.

Application tiled May Q3, 185:7. Serial No. 239,068. (No model.)

To @ZZ whom it may concern.-

Be it known that 1, ANDREW MATTsoN, of Minneapolis, in the county ofHennepin and State of Minnesota, have invented certain Improvements inStaple-Driving Tools, of which the following is a specification.

My invention relates to improvements in tools for driving the staplesused for attaching wire screens to their frames, and other similar work,and it generally consists in providing a simple and inexpensivemechanism whereby the staples shall be lfed and driven by the operationof a plunger.

My invent-ion further consists in the con struction and combinationhereinafter described, and particularly pointed out in the claims.

In the drawings which form a part of this specification, Figure 1 is avertical section of my improved slapledriving tool with the followerraised in position ready for driving. Fig. 2 is a similar sectionshowing the follower in position alter the staple has been driven. Figs.3 and 4 are details of the stapleholder on an enlarged scale.

In the drawings, 2 represents thebase ofthe tool, in the upper portionot' which is formed vertical ways 4,which guide the follower 6 as it israised andy lowered in the act of driving home the staples. The lowerportion of this follower is slightly tapered and the bottom end madeapproximately of the same thickness as one of the staples. rlhe upperend is preferably provided with a handle, 7, for convenience inoperating. A gage, S, is attached to the base and is provided with alip, 9, which engages a collar, 11, upon the follower to limit itsupward movement. I prefer to provide this gage with a slot, 10, throughwhich the fastening-screw 12 passes, thus making it adjnstable,andthereby varying the throw of the follower.

la represents a staple-carrier, consisting of a bellvcrank lever pivotedto the base 2, and

preferably placed in position so that the staples as they are hung uponits long arm will slide down its top edge by their own gravity.

16 represents a spring, one end of which is attached to the base 2 andthe other end provided with a link, 18, adapted to be hooked into anyoneof a series of notches, 20, on the long arm of the staple-carrier.The object of this spring is to keep the end of the staplecarrier closeagainst the base 2 and prevent the staples from dropping olif when thefollower is raised.

The operation is as follows: The handle is raised to the position shownin Fig.1. staples will be arranged upon the carrier and the iirst onewill take the position shown in Fig. 3, and will rest against the innersurface of the base in a recess formed by the slightly beveled orrounded corner of the carrier 14. The staple in this position isbroughtdrectly under the follower. The follower is now forced downwardand the end strikes the top of the staple, forcing back the carrier 1tand causing the staple to pass down between the carrier and the base.rEhe spring 16 yields sufficiently to allow the carrier to move back andthe plunger to pass it. The staple is carried by the follower downthrough the recess 22 and is driven into thematerial below. The followeris now raised,and as it passes away from the holder the spring16 causesthe holder to assume its original position, and another staple dropsinto the recess in position to be driven.

The tool may without reorganization be used for driving nails, tacks,&c., by merely changing the form ofthe upper surface of the carrier.

I claim as my invention- The 1. The combination, in a tool ofthe class ydescribed, with the base 2 and the plunger 6, of the pivotedstaple-carrier 14, having the inclined upper edge and held byspring-pressure against the base 2, substantially as de` scribed.

2. The combination, in a staple-driver, of the base 2, the plunger 6,the inclined staplecarrier pivoted to the base 2, and the spring 16,secured to said base,andmeans connecting the end, of the carrier to thefree end of said spring. substantially' as described.

3. The combination, in a stapledriver, of the base 2, the plunger 6, theinclined carrier let, pivoted to the base 2 and having the notches20,the spring 16, secured to said base and provided with the link 1S,adapted to engage the notches 20, substantially as described.

In testimony whereof` I have hereunto set my hand this 18th day of May,1887.

ANDREV M ATTSON.

In presence ofm R. I-I. SANFORD, A. M. GAsKELL.

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